orgasm or·gasm (ôr'gāz'əm)n. The highest point of sexual excitement, marked by strong feelings of pleasure and marked normally by ejaculation of semen by the male and by vaginal contractions within the female. Also called climax.

(ôr'gāz'əm) The peak of sexual excitement, characterized by strong feelings of pleasure and bv a series of involuntary contractions of the muscles of the genitals, usually accompanied by the ejaculation of semen by the male.